As a former US Environmental Protection Agency (EPA) senior attorney, Greg uses his deep agency, regulatory and enforcement knowledge to assist clients in solving complex environmental matters, with specialized expertise in CERCLA/Superfund, brownfields, RCRA, FIFRA and TSCA legal issues.

With over 15-years of experience in environmental law, Greg assists clients in regulatory counseling, enforcement defense, litigation, and transactional matters. His experience in both private and public practice, in particular at EPA, provides him the ability to navigate the regulatory process with an informed understanding of government decision-making and strategies for efficiently resolving complex legal and policy issues. He has significant experience related to the acquisition and sale of environmentally-impaired property, conducting voluntary cleanups, and the re-development of brownfield sites, including for renewable energy projects, as well as advising clients on EPA regulations and policies across a diverse client base, including oil & gas, electric utility, chemical, mining and marine transport.

Greg’s extensive practice of CERCLA at the highest levels in the federal government allows him to advise clients, particularly the defense of clients facing government enforcement or private party contribution actions. While at EPA, Greg served as the lead EPA Headquarters attorney on cleanup enforcement cases at Superfund sites with remedies exceeding $1 billion and regularly worked on national matters involving CERCLA. He also authored multiple national guidance documents on CERCLA enforcement and drafted model settlement documents used by EPA nationwide. During his EPA tenure, Greg received numerous EPA and DOJ awards, including for his work on the Administrator’s Superfund Task Force and the development of EPA’s national enforcement response to the US Supreme Court’s landmark decision in Burlington Northern & Santa Fe Railway v. United States.

Greg is an adjunct professor at William & Mary Law School, teaching Environmental Law and the Regulation of Toxic Substances and Hazardous Waste.

Bar Admissions

Education
JD, Wake Forest University School of Law, 2004

BS, Tufts University, 1999

• Do You Import Products for Commercial Sale? Have You Heard About the ‘Forever Chemicals?’

  By Gregory Wall |August 2021

• Got COVID-19 "Claims": Recent US EPA Enforcement under FIFRA Emphasizes Compliance Demands on Pesticide Product Supply Chains, Especially for Products Claiming to be Effective Against Coronavirus

  By Gregory Wall |November 2020

• Developments in the States to Address Climate Change, Washington Climate Change Report
• US EPA Issues New Guidance on the Federal Audit Policy for Self-Disclosing Environmental Violations, LawDay
• Unraveling the Glorious Mess: An Analysis of EPA’s Authority to Regulate GHG Emissions under Today’s Clean Air Act, Washington Climate Change Report
• Congressional Climate Change Activity in Early 2008, Washington Climate Change Report
• Aftermath of Massachusetts v. EPA: What Happens Next at the EPA, Washington Climate Change Report
• US Regulatory Aspects of Standardization for Nanotechnologies, ASTM Standardization News
• EPA issues PFAS Strategic Roadmap swiftly followed by other key PFAS announcements, Westlaw Today
• EPA’s New Approach to Risk Management For Chemicals Under the Toxic Substances Control Act, PCI Magazine
• COVID-19 Pushes Demand for Surface Disinfectants to Fever Pitch, Raising Regulatory and Litigation Risk, Thomson Reuters Westlaw
• EPA Proposal Under TSCA Would Prohibit or Restrict Most Uses of Methylene Chloride, Coatings World
• EPA Issues Near Zero Drinking Water Health Advisories for Certain PFAS, The National Law Review
• Heading Down Different Paths: An Update on PFAS Regulatory Developments in Northeastern States and at the Federal Level, Environmental Law Institute
• Do the Products You Sell Contain PFAS? A Question Every Retailer Must Be Prepared to Answer, Retail Industry 2022 Year in Review
• What EPA Enviro Justice Guidance Means For Chemical Cos., Law360
• What could the US EPA’s proposed Superfund listing for PFOA and PFOS mean for industry?, Chemical Watch
• 2020 Retail Industry Year in Review
• PFAS: New Targets for Proposition 65 Litigation, The Recorder